Comparative study between volume-controlled ventilation and pressure-controlled ventilation in prevention of postoperative pulmonary atelectasis in morbidly obese patients undergoing laparoscopic gastric sleeve surgery

Ain-Shams Journal of Anesthesiology

Table 4 PaCO₂ (mmHg)

PaCO₂	Group (V), VCV (n = 26)	Group (P), PCV (n = 26)	t test	p value
Preoperative	33.64 ± 3.06	32.41 ± 4.32	1.593	0.124
Intraoperative	34.31 ± 3.12	32.55 ± 4.41	0.336	0.670
30 min after extubation	37.42 ± 3.73	36.46 ± 5.08	0.600	0.511
12 h after extubation	37.14 ± 4.14	35.63 ± 4.61	0.684	0.276
24 h after extubation	36.42 ± 3.49	35.58 ± 4.35	0.421	0.305

This table shows no statistically significant difference between groups according to PaCO₂
t independent sample t test, PCV pressure-controlled ventilation, VCV volume-controlled ventilation
p value > 0.05 NS